Don't sweat it Michalis, it's not a biggie, really.
See if the person that re-lumed your dial and replaced the hands back on afterwards could do something about, failing that take it to your watchmaker for a fix.
All that needs to be done is to remove (pry-off) the bezel and replace the second hand on top of a very tiny pinion. If you haven't done it by yourself before and don't posses the proper tools, I suggest you don't do it this time either, it's a simple job for someone who's done it before but quite a risk for ones that haven't...keeping in mind all the $$$ you've already spent on getting your 'holy grail'.
cheers,
babola